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Modern FPGAs provide great computational power, flexible resources and a versatile environment. Managing to obtain the best of these three worlds is rather complicated given the actual design flows. Our work focus on enabling task multiplexing, as part of a more flexible FPGA usage. Task multiplexing in FPGAs raises indeed a lot of questions. Multiplexing the usage of a reconfigurable fabric is leading to a better utilization of its surface because it offers to share its resources not only in space (number of slices allocated to a task) but also in time (tasks are allowed in time slots). The base mechanism known as context-switch consists in removing a task after its allowed time slot has passed. The first step toward efficiently multiplex tasks in a reconfigurable fabric is to decide when this removal will have the least possible impact on the system. This poster presents our preliminary results concerning what we consider …